AGS Fitting Assortments contain a specific collection of fast moving fittings that should be kept on hand when working with automotive hydraulic braking systems. Assortments are packaged in shatter-resistant, see-through plastic trays. Locator labels on the inside lid make locating, selecting, and re-filling quick and easy. Fitting Assortment – 32 SKU. An assortment that contains tube nuts, adapters, and unions for working with all types (domestic, import, 6mm) of 3/16 and 1/4 diameter brake line systems.